Title :
UAV Flight Performance Optimization Based on Restart PRP Conjugate Gradient Method
Author :
Chen, Xiao ; Wang, Xinmin ; Zhou, Jian
Author_Institution :
Coll. of Autom., Northwestern Poly-Tech. Univ., Xi´´an, China
Abstract :
To solve the problem that the integral termination condition of performance index function can not be fixed and to avoid settling high dimensional two-point-boundary-value model, the energy as a new integral variable instead of time variable has been introduced into the flight trajectory optimization. The trajectory optimization model established by energy-state method was transformed to a nonlinear programming problem. Restart PRP conjugate gradient method was proposed to solve the non-quadratic objective function. Finally, simulation is carried out based on an UAV model. The results show that compared with PRP method, the restart PRP method saves fuel by 6.76%, and the flight time of optimal flight vertical profile shortens 6.71%.
Keywords :
aerospace control; autonomous aerial vehicles; conjugate gradient methods; optimisation; trajectory control; UAV flight performance optimization; energy state method; flight trajectory optimization; flight vertical profile; integral termination condition; integral variable; non quadratic objective function; nonlinear programming problem; performance index function; restart PRP conjugate gradient method; time variable; two point boundary value model; Engines; Fuels; Gradient methods; Mathematical model; Programming; Trajectory; UAV; energy; flight performance optimization; restart PRP conjugate gradient; vertical profile;
Conference_Titel :
Industrial Control and Electronics Engineering (ICICEE), 2012 International Conference on
Conference_Location :
Xi´an
Print_ISBN :
978-1-4673-1450-3
DOI :
10.1109/ICICEE.2012.230